Abstract: A media-agitation type wet disperser is provided which eliminates the group motion of media, attains high dispersion efficiency, and avoids wear problem. A cylindrical vessel having a feed opening for the treating material and a discharge opening for the treated material is equipped with a cylindrical separator and a rotor rotating while being fixed to a rotary shaft. The rotor is composed of pluralities of small rotors each having a cylindrical agitation part and a disk-shaped holding part. The agitation part has pluralities of throughholes connecting the inside and the outside thereof.

Abstract: The objects of the present invention are to improve characteristics of electric double layer capacitors, such as energy density and charge-and-discharge rate, and to provide a positive electrode for electric double layer capacitors useful for the foregoing object, and a simple method for its production. Disclosed is a positive electrode for electric double layer capacitors comprising graphite-carbon composite particles, the graphite-carbon composite particle being composed of a graphite particle and a carbon layer covering the graphite particle.

Abstract: The present invention can provide particles for electro-rheological fluid for providing a high electro-rheological effect over a wide temperature range at low electric power consumption, and having high strength and excellent durability, not being susceptible to break-up due to the load of stress. Particles for an electro-rheological fluid of the present invention comprise spherical carbonaceous particles, obtained substantially from a solvent and a condensation product of a methylene type bond of aromatic sulfonic acid or a salt thereof.

Abstract: The present invention includes a grinding container; a separator provided in the grinding container for separating the grinding container into two chambers of an inner chamber and an outer chamber and having, at least in part, a clearance that connects the chambers; a stirrer rotatably provided in the inner chamber; a supply port for supplying a processing object into the inner chamber; and a discharge port for discharging the processing object from the outer chamber. The stirrer includes a disc rotatably provided in the inner chamber and a plurality of rotating arms provided on both sides of the disc. The disc has a plurality of openings that passes through opposite sides thereof. The inner chamber has therein a plurality of fixed arms facing the rotating arms.

Abstract: A crushing apparatus for processing of materials in bulk includes a cylindrical separator disposed rotatably in a crushing vessel almost coaxially therewith, wherein the separator partition on interior space of the vessel into an inner and an outer chamber one inside the other about the axis of the vessel. The apparatus also includes a cylindrical agitation unit disposed rotatably in the inner chamber and almost coaxial with the vessel. The separator comprises inner and outer annular rings and a plurality of steel studs in a mutually adjacent arrangement and extending between the inner and outer rings space, thereby defining a plurality of slits or openings therebetween for intercommunication of the inner and outer chambers. The agitation unit has a series of flutes and crowns in alternating orders on the peripheral wall thereof, and each of the flutes has a slit or through-bore intercommunicating the interior and the exterior of the unit.

Abstract: A steam generator for a steam bath for generating steam from hot water supplied thereto. The steam generator for a steam bath has a closed main part equipped with a hot-water supply port, an air inlet, a discharge port and a steam outlet. Hot water received from the hot-water supply port is distributed in the main part so as to contact with air coming through the air inlet, and the thus generated steam is discharged through the steam outlet. Warm water formed as a result of steam generation is discharged from the discharge port.

Abstract: The material supplied to the interior of the crushing tank by the material supply device is: crushed into the form of a fine powder by the agitator; sent upward by a gas to be directed to the classifier through the guide device; classified in the course to the classifier and the fine powder reduced to a predetermined particle size is extracted to the outside by means of the fine powder discharge tube. On the other hand, the coarse powder of which the particle size has not been reduced to the predetermined particle size is guided again to the crushing tank through a ring-like circulation passage formed between the inner peripheral surface of the communicating portion of the classifier and the outer peripheral surface of the dispersing tube of the guide device so as to be crushed by the agitator. Since this process is repeated, a fine powder of the predetermined particle size is obtained.

Abstract: This invention relates to a method for preparing fine graphite particles which can be used as a highly functional graphite material in wide applications. According to this method, foliated fine graphite particles having a high aspect ratio and hence well-developed anisotropy can be prepared, without formation of secondary particles, by dispersing expanded graphite particles into a liquid and then exposing them to ultrasonic waves. Articles molded of the resulting foliated fine graphite particles exhibit high electrical conductivity and thermal conductivity.

Abstract: Molded articles of high-purity alumina fibers, which are porous materials in which heat resistance is high, and in particular, deformation and linear shrinkage in heat cycles at a temperature more than 1700.degree. C. are small. The production method comprising spinning a spinning solution containing an alumina fiber precursor as the main component to obtain precursor fibers, prefiring these precursor fibers at 400.degree. to 1000.degree. C. to form prefired fibers, and then molding and calcining these prefired fibers. Sintering between the fibers can be achieved at a relatively low temperature. In particular, even when no inorganic binder component is added, the molded articles of high-purity alumina fibers can be obtained by a simple process.

Abstract: There is here provided a method for growing single crystals from a melt which comprises the steps of preparing a double structure crucible constituted of an inner tube and an outer tube; placing a raw material in the inner tube; hermetically sealing the outer tube; and heating/melting the raw material to perform crystal growth.According to the present invention, it is possible to hermetically confine and to crystallize the raw material even at a high temperature.

Abstract: A stable processing of a waste gas containing halogen-containing materials is rendered possible without fear of increase of the pressure loss or clogging of a louver unit near the waste gas inlet in a second moving bed due to accumulation of the halogen components. This can be accomplished by a process for the desulfurization and denitrification of a waste gas containing halogen-containing materials in addition to SO.sub.x and NO.sub.

Abstract: The present invention provides a process for producing a coal-water mixture using a reaction mixture obtained by subjecting a low-rank coal of high water content to a hydrothermal treatment in the presence of carbon monoxide and water at a temperature not higher than the critical temperature of water. The above hydrothermal treatment makes the walls of pores present in the coal hydrophobic and densifies the coal matrix, whereby the coal after the treatment has a lower equilibrium moisture content. Hence, it becomes possible to produce a coal-water mixture containing a high concentration of coal and having good stability and fluidity, from a low-rank coal of high water content which has been unusable as a material for a coal-water mixture. Further, in the production of a coal-water mixture from the above reaction mixture, the amount of surfactant used can be reduced because the liquid phase of the reaction mixture contains a large amount of humic acid having surface activity.

Abstract: Disclosed is a process for producing carbon materials which comprises the steps of preparing a raw material composition by mixing a methylene type linkage-containing condensation product of an aromatic sulfonic acid or a salt thereof with a solvent, the condensation product having been formed by means of a linkage of the formula--(CH.sub.2).sub.n --T.sub.x --(CHR).sub.m -- (1)where T is a benzene or naphthalene ring, R is a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, or a benzene ring, and each of n, m and x is 0 or 1, but n and m should not be zero at the same time; spinning or molding the raw material composition; and carbonizing the spun fiber or molded article. Preferably, the aforesaid linkage is --CH.sub.2 --.

Abstract: This invention is concerned with ceramic substrates for multilayer interconnection. This invention is also concerned with a raw batch for ceramic substrates which require a calcining temperature as low as 1,000.degree. C. or lower upon their production, are low in dielectric constant and have a coefficient of thermal expansion close to that of silicon and also with a process for the production of the substrates. This invention makes use of a raw batch which permits the use of a low resistance conductor such as Ag-Pd, Ag, Au or Cu and also the production of substrates by low-temperature calcination. The raw batch contains borosilicate silicate glass powder, and aluminum borate powder and at a weight ratio of 40-80 percent to 20-60 percent. The raw batch can additionally contain one or more specific oxides in particular proportions.

Abstract: A single crystal is produced from the melt of a starting material by solidification. The process makes use of a triple-walled crucible compound of an outer cylinder made of a material selected from high-melting-point metals and alloys having a melting point of at least 1,500.degree. C., an inner cylinder made of at least one material selected from high-melting-point ceramic materials and carbon materials such as graphite, pyrolytic graphite and vitreous carbon and an intermediate cylinder made of quartz glass. The starting material is charged in the inner cylinder. The inner cylinder with the starting material charged therein is inserted in the intermediate cylinder. The intermediate cylinder with the inner cylinder hermetically inserted therein is inserted in the outer cylinder. The outer cylinder is welded to hermetically enclose the intermediate and inner cylinders therein. The thus-assembled crucible is heated to fuse the starting material, followed by crystal growth.

Abstract: Disclosed are a high-purity alumina continuous filament woven fabric comprising a high-purity alumina continuous filament having an alumina content of at least 95% by weight and a filament diameter of 5 to 20 .mu.m, a hybrid woven fabric comprising this high-purity alumina continuous filament and a high-strength continuous filament having a tensile stength of at least 200 kg/mm.sup.2, processes for the preparation of these woven fabrics, a high-purity alumina continuous filament valuable for the production of these woven fabrics, and a process for the preparation of this high-purity alumina continuous filament. These woven fabrics are very useful as a reinforcing fibrous substrate of a fiber-reinforced composite material or as a heat-insulating material.

Abstract: Machinable ceramics with 30-60 vol. % of fine crystals of fluorophlogopite, a synthetic mica, evenly dispersed in a vitreous matrix is produced using as principal raw materials kaolin and activated clay, which are natural minerals, other than metal oxides themselves. According to the production process, a mixture of fine particulate raw materials is calcined under first heat treatment conditions in which a maximum temperature is in the range of 1,000.degree.-1,100.degree. C. The raw materials include kaolin and activated clay as principal raw materials, Mg-containing, K-containing and F-containing compounds as auxiliary raw materials and B.sub.2 O.sub.3 as a sintering aid. The resulting calcined mass is ground into fine particles, followed by the formation of a green body of a desired shape. The green body is then sintered into a fired body under second heat treatment conditions in which a maximum temperature is in the range of 1,100.degree.-1,250.degree. C.

Abstract: A sulfur dioxide-containing gas, for example, one obtained by an SO.sub.x and NO.sub.x removing process using ammonia is treated by the use of a reaction apparatus comprising a reducing reaction portion and a composition controlling oxidation reaction portion, provided in the same reactor or reactors adjacent to each other, to convert the composition of the gas into one suitable for the Claus reaction.

Abstract: Disclosed is a process for continuously producing highly flexible long .alpha.-alumina fibers of small diameter according to the slurry spinning technique. Also disclosed are a specific spinnable slurry containing an alumina powder having an average particles diameter of 0.1 .mu.m or less, the specific thermophysical conditions under which the slurry is spun into a multifilament yarn, and the well-balanced residence time conditions under which the multifilament yarn running as a single continuous fiber is prefired and fired to form a long .alpha.-alumina fiber.

Abstract: A coal-methanol slurry having excellent storage stability, transportability and combustibility has been provided by using coal particles having a maximum particle size not greater than 1,500 .mu.m and a cumulative particle size distribution specified with respective to particles of 74 .mu.m and smaller, 10 .mu.m and smaller and 3 .mu.m and smaller and controlling the concentration of the coal particles within a specific range defined in relation to the degree of carbonization of the coal employed. A useful and advantageous production process of the slurry has also been provided, featuring an addition of water and the timing of its addition.